Lime rotary kiln, also known as roller rotary kiln, has advanced structure and reliable combined scale seal at both ends of rotary kiln. In order to make the air leakage coefficient less than 10%, composite refractories are used to reduce the radiation heat loss.

Brief introduction of lime rotary kiln process

Rotary kiln is used for calcining limestone and dolomite to produce active lime and light burned dolomite and other by-products. Its main process flow includes the following systems: raw material storage and transportation water washing system, rotary kiln system (3), finished product storage and transportation treatment system, public system and water treatment system.

The structure of lime rotary kiln is advanced. The vertical preheater with low pressure loss can effectively improve the preheating effect. After preheating, the decomposition rate of limestone can reach 20-25%, and 10-15mm fine limestone can be directly used.

The lime rotary kiln has reliable combined scale seal at both ends of rotary kiln. In order to make the air leakage coefficient less than 10%, composite refractories are used to reduce the radiation heat loss;

The circular or square vertical cooler with filling type and divisional ventilation of lime rotary kiln makes the temperature of lime out of the cooler 800C + ambient temperature, which is convenient for transportation and storage, and can preheat the secondary air into the kiln above 700 ℃, reducing the moving parts and special materials.